Interventional radiologists and staff members, during all their professional activities, are frequently exposed to protracted and fractionated low doses of ionizing radiation. The authors present a novel approach to perform on line monitoring of the staff during their interventions by using a device based on an Active Pixel Sensor (APS). The performance of the sensor as an X-ray radiation detector has been evaluated with a proper experimental set-up: the number of pho-tons and the generated charge have been assessed as dosimetric observables. The correlation of these observables with the dose measured by the passive dosimeters has been analyzed: a good linearity has been demonstrated and the response dif-ference between pulsed and continuous operational modes is reduced to less than 10%, marking a distinct improvement with respect to commercial Active Personal Dosimeters.

A Dosimetric Device Based on a CMOS Image Sensor for Interventional Radiology

CONTI, ELIA;PLACIDI, Pisana;BISSI, LUCIA;PASSERI, Daniele;SCORZONI, Andrea;
2014-01-01

Abstract

Interventional radiologists and staff members, during all their professional activities, are frequently exposed to protracted and fractionated low doses of ionizing radiation. The authors present a novel approach to perform on line monitoring of the staff during their interventions by using a device based on an Active Pixel Sensor (APS). The performance of the sensor as an X-ray radiation detector has been evaluated with a proper experimental set-up: the number of pho-tons and the generated charge have been assessed as dosimetric observables. The correlation of these observables with the dose measured by the passive dosimeters has been analyzed: a good linearity has been demonstrated and the response dif-ference between pulsed and continuous operational modes is reduced to less than 10%, marking a distinct improvement with respect to commercial Active Personal Dosimeters.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/1169879
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